CPT 96373: Arterial Medication Administration, Therapeutic or Diagnostic
CPT code 96373 reports the intra-arterial administration of a medication or other substance for therapeutic, prophylactic, or diagnostic purposes. The code captures a distinct procedural service where the provider delivers agents directly into an artery, a technique typically used in hospital outpatient departments, interventional radiology, or other specialized facility settings. Nationally, accurate use of this code is important for clinical documentation, procedure tracking, and proper claims adjudication for advanced vascular interventions.
This analysis covers major national payers including Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of clinical context for arterial administration, how 96373 relates to nearby injection and infusion codes, and typical billing considerations relevant to facility-based arterial procedures. The publication also outlines common associated diagnoses that may justify arterial administration in outpatient procedural settings.
The report provides benchmarks and coding relationships to adjacent codes used for subcutaneous, intramuscular, and intravenous administrations, and situates 96373 within procedural service lines often tied to interventional and radiology workflows. Policy updates and payer-specific coverage nuances are summarized to help coding, billing, and revenue teams understand where 96373 is applied and how it interfaces with facility-based vascular procedures.
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Billing Code Overview
CPT code 96373 describes the administration of a medication or other substance via an arterial route to treat, prevent, or diagnose a condition. This service involves direct delivery into an artery and is classified as an intra-arterial therapeutic, prophylactic, or diagnostic administration.
Service type: Arterial medication administration
Typical site of service: Hospital outpatient department, interventional radiology suite, or other facility capable of arterial access and monitoring
Clinical & Coding Specifications
Clinical Context
A 68-year-old patient with long-term medication needs (Z79.899), essential hypertension (I10), type 2 diabetes (E11.9), and chronic obstructive pulmonary disease (J44.9) presents to an outpatient vascular/interventional suite for an intra-arterial administration of medication to treat a localized vascular lesion. The patient reports worsening unilateral lower extremity ischemic pain and claudication despite medical therapy. After consultation with the interventionalist (family medicine or internal medicine clinician coordinating care, with a registered nurse assisting), the decision is made to perform intra-arterial administration of a vasodilator and diagnostic contrast injection to assess perfusion and relieve symptoms.
The clinical workflow includes pre-procedure assessment (consent, allergies, medication reconciliation, and review of diabetes and hypertension control), vascular access via femoral or radial artery, selective catheterization of the target artery, intra-arterial medication administration, monitoring for hemodynamic or local vascular complications, and post-procedure observation with vital signs and access-site checks. Documentation includes indication, informed consent, artery accessed, medication name and dose, time of administration, patient response, and any complications. Billing uses 96373 for the intra-arterial administration; concurrent evaluation and management visits may use office visit codes when appropriate and separately reportable.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
25 | Significant, separately identifiable evaluation and management service by the same physician on the same day | Use when a separately identifiable office visit is performed on the same day as 96373 and documentation supports a distinct E/M service. |
59 | Distinct procedural service | Use when intra-arterial administration 96373 is distinct from another procedure on the same day and documentation supports separate services. |
78 | Unplanned return to the operating/procedure room by the same physician following initial procedure for a related procedure during the postoperative period | Use if a patient requires an unplanned intra-arterial repeat administration during the global period. |
52 | Reduced services | Use when 96373 is partially reduced or not completed as originally planned. |
53 | Discontinued procedure | Use when 96373 is started but discontinued due to patient condition or other accepted reasons. |
22 | Increased procedural services | Use when the intra-arterial administration requires substantially greater resources or effort than typical and documentation justifies increased intensity. |
62 | Two surgeons | Use when two physicians of different specialties work together as primary surgeons during the procedure requiring shared responsibility for the intra-arterial administration. |
80 | Assistant surgeon | Use when an assistant surgeon is required and documented for the procedure. |
XU | Unusual non-overlapping service component | Use when 96373 represents a distinct service not ordinarily reported together with another service, per documentation. |
QK | Medical direction of two, three, or four qualified health care professionals by a physician | Use when the physician medically directs multiple qualified personnel performing components related to the intra-arterial administration. |
QX | Qualified nonphysician health care professional (modifier) | Use when a qualified nonphysician (e.g., advanced practice clinician) personally performs the intra-arterial administration and billing rules permit. |
| Taxonomy Code | Specialty | Notes |
|---|---|---|
163W00000X | Registered Nurse | May perform patient preparation, vascular access assistance, medication administration under appropriate supervision per state scope of practice. |
207Q00000X | Family Medicine Physician | May evaluate and co-manage chronic conditions and refer or perform office-based intra-arterial procedures when credentialed. |
207R00000X | Internal Medicine Physician | May coordinate care, perform or supervise intra-arterial interventions in appropriate practice settings when credentialed. |
Related Diagnoses
| ICD-10 Code | Description | Clinical Relevance |
|---|---|---|
Z79.899 | Other long term (current) drug therapy | Indicates chronic medication use; relevant when documenting ongoing therapies that may affect intra-arterial treatment planning or anticoagulation management. |
I10 | Essential (primary) hypertension | Common comorbidity influencing peri-procedural hemodynamic monitoring and medication choice for intra-arterial administration. |
E11.9 | Type 2 diabetes mellitus without complications | Diabetes increases vascular disease risk and may be an indication for intra-arterial therapy for peripheral ischemia or vascular complications. |
J44.9 | Chronic obstructive pulmonary disease, unspecified | COPD affects sedation choices and respiratory monitoring during and after the procedure. |
M54.5 | Low back pain | May be present as a comorbidity; relevant to positioning and comfort during arterial access and procedure. |
Related CPT Codes
| CPT Code | Description | Relationship to This Procedure |
|---|---|---|
96372 | Therapeutic, prophylactic, or diagnostic injection; subcutaneous or intramuscular | Alternative route of medication delivery when intra-arterial administration (96373) is not indicated or feasible; used for other routine injections in the same visit. |
96374 | Therapeutic, prophylactic, or diagnostic injection; intravenous push, single or initial substance/drug | IV route administration that may be used before or after intra-arterial therapy for systemic agents or sedation; documents IV push medications separate from intra-arterial 96373. |
99213 | Established patient office or other outpatient visit, typically 15 minutes | Represents a lower-level E/M visit that may be reported on the same day if a separately identifiable evaluation is performed in addition to 96373 (use 25 as applicable). |
99214 | Established patient office or other outpatient visit, typically 25 minutes | Represents a higher-level E/M visit that may be reported on the same day when a more complex, separately identifiable evaluation is performed in addition to 96373 (use 25 as applicable). |